Update workflow to run linting on Ubuntu-latest #97

	---
	name: "Demystify Tests"
	on:
	pull_request:
	push:
	branches:
	- "main"
	jobs:
	tox:
	name: "Test ${{ matrix.toxenv }}"
	runs-on: "ubuntu-latest"
	strategy:
	matrix:
	include:
	- python-version: "3.8"
	toxenv: "py38"
	- python-version: "3.10"
	toxenv: "py310"
	steps:
	- name: "Check out repository"
	uses: "actions/checkout@v2"
	with:
	submodules: 'true'
	- name: "Set up Python ${{ matrix.python-version }}"
	uses: "actions/setup-python@v2"
	with:
	python-version: "${{ matrix.python-version }}"
	- name: "Install OS packages"
	run: \|
	sudo apt-get --quiet update
	sudo apt-get install --quiet --yes build-essential libxml2-dev \
	libxslt1-dev
	- name: "Get pip cache dir"
	id: "pip-cache"
	run: \|
	echo "::set-output name=dir::$(pip cache dir)"
	- name: "Cache pip packages"
	uses: "actions/cache@v2"
	with:
	path: "${{ steps.pip-cache.outputs.dir }}"
	key: "${{ runner.os }}-pip-${{ hashFiles('/base.txt', '/local.txt') }}"
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: "Install tox"
	run: \|
	python -m pip install --upgrade pip
	pip install tox
	- name: "Run tox"
	env:
	TOXENV: ${{ matrix.toxenv }}
	run: \|
	tox

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